Valve.



K. B. BRITTON.

VALVE.

. APPLICATION FILED FEB-27.1918 1,289,1Ui Patented Dec. 31, 1918.

Fig-Z- A TTOR/VEYJ KARL B. nnrr'ron, or EAST CLEVELAND, OHIO, 'esslenoa 'ro PETER. A. FRASSE & co. mo, OF-NEW scan, at. Y., A conrozaarron or NEW YORK.

VALVE.

Specification of Letters Patent.

Continuation of application Serial No. 94,558, filed May 1, 1916. This application filed February 27, 1918.

Serial No. 219,381.

To all whom it may concern:

Be it known that I, KARL B. BRITTON, a citizen of the United States, and a resident of East Cleveland, Cuyahoga county, and State of Ohio, have invented certain new and useful Improvements in Valves, of which the following is a specification, reference being had to the accompanying drawing/st, forming a part thereof.

.y invention relates to improvements in pet cocks, relief valves, priming cups and the like, and its object is to provide a device of this character which is extremely simple in construction and of which the valv will be positively seated when closed wi hout requiring any niceties of construction or adjustment. It is also a self-cleaning device which, unlike such structures as have been available heretofore, will' not becomev clogged up.

A furt er object of my invention is to provide a pet cook or similar device in which the valve is'drawn onto its seat and moves toward the outlet opening so that the pres- .sure of the fluid confined tends to close the valve. I also make the valve member inseparable from the casing of the device so that it cannot become removed and lost.

Another object of my invention is to pro vide a simple and improved primingcup particularly adapted for automobile engines.

In order that my invention may be thoroughly understood, I will now proceed to describe the same in the following s ecification and then point out the novel eatures thereof in appended claims.

Referring to the drawings:

Figure 1 is a sectional elevation of the float feed chamber of a carbureter, with the lowerl portion thereof constructed to form a part of a pet cock which embodies the present invention. I

The portion of the structure of Fig. 1 which embodies this invention, is shown on an enlarged scale in Fig. 2, in sectional elevation.

fied form of structure which also embodies this invention, the device in this figure be;

ing a unitary structure capable of being affixed to any desired apparatus.

Fig. 4 is a sectional elevation of a pr1ming cup arranged and constructed in accordance with my invention, and

float feed chamber of a carbureter.

Figs. 5 and 6 are views corresponding to Fig. 4, of further modifications of my invention.

Like characters of reference designate corresponding parts in all the figures.

10 designates the body or bowl of 1the he lower part of thisbowl 'is constructed to form a downwardly projecting hollow lug 11 which forms the casing of the pet cock. The upper periphery of the bore of this casing 1s designated by 12 andforms the seat for the valve. The lower end of the lug 11 is somewhat smaller in diameter and is provided with a hole in axial alinement with thehole above it, and is tapped to have a left hand screw-thread 13, 14 are holes bbredthrough the lug into the space above the threaded hole, the threaded portion preferably being extended up somewhat above shank below the thread is bent over at right angles as at 22 to form a handle, by means of which the manipulation of the device is facilitated.

Before specifically describing the modified form of the device which is illustrated in Fig. 3, I will point outthe operation of the structure shown in Fi 1 and 2. When the parts are in the positions in which the are shown in these figures, the valve is close A left-hand turn of the shank 21 will cause the valve head to be raised from the seat 12 and any fluid or other matter which has been retained by it may pass down through the casing and out through the holes 14. It is clear that it will be self-flushing and that any extraneous matter which may have been caught'above the valve head will be disturbed and dislodged first by the upward movement of the valve head which is preferably crowned to act as a shed and then will be washed down through the holes 14.

When the spindle is turned in the opposite direction, the valve head will be drawn onto its seat. The loose connection between the screw threads provides for a certain amount of lateral movement of the valve head relatively to its seat, and insures its proper seating with an equal pressure upon all portions of the seat. Moreover, this loose connection between the screw threads is of a distinct manufacturing advantage as no fitting of these parts is required. It is obvious that there is no leakage through the threads as they are not on the pressure side of the valve head. 1

Attention is particularly directed to the fact that the valve moves .ontoits seat in the direction'of flow of fluid toward the outlet, and consequently fiuid pressure within the receptacle tends to hold the valve on its seat. It will of course be understood that while the loose thread feature above described is desirable, it is not essential and in fact other means for drawing the valve onto its seat may be employed. For example, the stem may extend through a suitable hole in the casing and be actuated by a cam forming part of the handle.

The structure of the pet cock of Figs. 1 and 2, may obviously be utilized as a removable independent structure by merely making the casing 11 to correspond to the casing 30 of the modification shown in Fig. 3, which will now be described.

In the structure shown in Fig. 3, the casing 30 is a separate member provided with screw-threads at 31 by means of which it may be affixed to a desired structure, and provided with a flan e 32 which, in common with the usual practice, may be flattened to form polygonal sides to which a wrench may be applied.

In this case the valve seat is designated by 12 and the valve head by 20. The lower part of the casing 30 is threaded to receive the threaded part 33 of the valve actuating shank. The threaded shank is shown bent over at right angles below the casing and a handle 34 screwed onto it.

Above the threaded part the shank is made of small diameter as shown at 35. This passes through the valve head and a collar36 is provided to limit the position of the valve head thereon; 37 is a nut or riveted washer on the shank above the valve head by means of which it is fastened'to the shank. The head of course may be integral with the shank if desired.

14*, are outlet holes near the bottom of the casing and 15 the projection which raises the threaded parts above the upper ends of these holes.

The operation of this device is similar to that of the other, and in this case the flexib lity of the shank 35 is depended upon to g1ve lateral movement to the valve head if any is requlred to properly seat the valve.

In Fig. I have shown a priming cup which. constltutes an embodiment of my invention and comprises a body 36 having a wrench receiving portion 37 an externally threaded portion 38 at one end and an internally threaded portion 39 at the opposite end. The externally threaded end is adapted to be screwed into a tapped hole in the cylinder and the opposite end is enlarged to form a cup 40 into which gasolene or the like may be introduced. In addition to the body, the priming cup comprises a valve having an enlarged valve head 41 at one end and a stem 42 provided with a screw-threaded portion 43 which cooperates loosely with the threaded portion 39 of the body. The outer end of the stem is bent at an angle to constitute a handle 44. The passage 45 connects the cup with the interior of the body above the valve. The portion 39 of the body and the stem are preferably provided with left hand threads in order that the handle 44 may be turned to the right for closing the valve and to the left for opening, as the natural way of opening and closing the valve. At the same time the valve is not forced outwardly onto its seat but in closing is'drawn upwardly, in a direction opposite to the flow of fluid, or, in other words, it opens in the direction of flow. The loose threads allow the valve to seat itself as in the structures hereinbefore described.

Instead of having the cup formed to one side of the tapped hole 39 the cup may be formed concentric with the tap ed member.- and may be either integral or ormed of a separate piece, as shown in Fig. 5. In this modification the cup is designated 46, the central tapped lug 47 and inclined passages 48 are provided in place of the passage 45.

The structure may readily be adapted for use in a horizontal position such as for example, on the side of the engine cylinder. This modification is shown in Fig. 6 and differs from that of Fig. 4 only in that the cup is formed with its opening at right angles to the stem instead of parallel to it. The cup is here designated 50, and the connecting passage 51.

have shown several forms of my invention-to indicate that I do not limit myself to any specific form of construction, and I intend no limitations other than those imposed in the appended claims.

What I claim is:

1. A valve comprising a tubular casing having a constricted internally-threaded porstem rigidly ing, said stem being formed at its outer end unitary valve having a head above the dub and adapted to be drawn onto the seat, and a stem screw-threaded undersize to cooperate loosely with the tapped hole in the lug.

3. A valve comprising a cup-shaped casing having an upwardly extending lug in the bottom and discharge openings below the top of the lug, a circular valve seat at the top and a tapped hole in the lug, and a unitary valve having a head above the cup and adapted to be drawn onto the seat, and a stem screw threaded under size to cooperate loosely with the tapped hole in the lug and having its outer end bent at an angle to form a handle.

4. A valve comprising a casinghaving a circular valve seat at ne end and a threaded portion spaced from said seat, the center of the seat lying in the axis of the said threaded portidn, the casing also having an opening for the passage of fluid, a unitary valve member comprising a tapered valve head and a threaded shank rigidly connected therewith and cooperating with the threaded portion of said casing for moving said valve head into and away from the valve seat and arranged to permit lateral movements of the valve head.

5. A valve comprising a casing having a circular valve seat at the top and an inwardly extending lug spaced from said seat, at the bottom, having a tapped hole, the center of the seat lying in the axis of the tapped hole, the casing having also a discharge opening below the inner end of the lug; a unitary valve member comprising a taperedvalve head and a threaded shank rigidly connected therewith and cooperating with the tapped hole for moving said valve head into and away from the va ve seat and arranged to permit lateral movements of the valve head.

In witness whereof I have hereunto set my hand this 30th day of January, 1918.

KARL B. BRITTON. 

